topic Re: When I create A fluid... nothing happens in Bifrost Forum

When I create A fluid... nothing happens

Anonymous — Mon, 06 Apr 2020 17:02:07 GMT

Hello, Im farily new, and looked for an answer but still have the same problem....

I set the animation counter to 1 ~ first frame... I select my sphere that I want to be the emmiter, then select Bifrost add fluid.... In the hypergraph it is created, but at the center 0, 0, 0.... my sphere is below a tap model I have made....

When I click play, the emission box does not move to the selected object and I can not see anything happenining where it is at o, o, o...

Ive been going over this all day and cant get it to work....

Re: When I create A fluid... nothing happens

Anonymous — Mon, 06 Apr 2020 17:39:23 GMT

Im using Windows 10
Maya 2020 student version
Maya is installed to D : / to save space on my small but fast c : /

Bifrost version 2.0.3.0

Re: When I create A fluid... nothing happens

wongt — Mon, 06 Apr 2020 17:58:36 GMT

Hello,

Can you upload your scene. From you description, it doesn't look like a workflow issue. I would like to check things like scene scale and make sure if all connections are correct. Thanks.

EDIT: you can also try lowering your Master Voxel Size (bifrostLiquidPropertiesContainer1) from 0.5 to 0.1. This should increase accuracy if it's only off by a bit.

Re: When I create A fluid... nothing happens

Anonymous — Mon, 06 Apr 2020 18:31:36 GMT

Hello there and thank you for the speedy reply and offer to help.... very kind of you, plz be gentle, Im a noob....

The tutorial did not mention anything about setting scale? Is this the first thing to do when setting up your scene?

https://1drv.ms/u/s!AvwyfT4tZm1FhxJrlnLtnlMo-B-B?e=hCuYOy would not let me upload the file here....

Re: When I create A fluid... nothing happens

wongt — Mon, 06 Apr 2020 19:36:05 GMT

Scene scale is quite important in Bifrost Liquids. It looks like that is the culprit in your scene as well. Essentially Bifrost interprets 1 maya scene unit = 1meters. It looks like the sphere you want to be an emitter is ~.5 units which makes it hard for the Bifrost default values (mvs=.5) to evaluate. If you change your Master Voxel Scale from 0.5 to something smaller like 0.1, you should be able to see the liquid around the sphere. The mvs can be found on the bifrostLiquidProperties1 node under the tab 'Resolution'. You may also want to turn on the 'Continuous Emission' flag found in emitterProp1 node under the Properties tab.

Re: When I create A fluid... nothing happens

mspeer — Mon, 06 Apr 2020 19:51:45 GMT

Hi!

Bifrost uses by default a certain detail size for the simulation, which will not work if the objects are too small.

So either increase the object size or do what @wongt suggested, a lower value for Master Voxel Size will work.

Re: When I create A fluid... nothing happens

Anonymous — Mon, 06 Apr 2020 20:20:56 GMT

Thank you so much... it was driving me insane... '' )